Filter.



PA BNTED- AUGA, 1908.

' A. E. CHAPMAN.

FILTER. APPLICATION FILED 110V. 8, 190B.

v and the UNITED sratrns 'P ATENT'OFFIOE.

ALONZO E. CHAPMAN, or REDLANDS, CALIFORNIA.

FILTER.

To all whom it may concern:

Be it known that I, ALoNzo E. CnxPuAN, a citizen of the United States, residing at Redlands, in the county of San Bernardino and State of California, have invented a new and useful Filter, of which the following is a specification.

This invention relates to filters and its main object is to provide means for cleaning the filter from time to time without having to open the filter.

A further objectof the invention is to provide for cleaning the filter by a current of water moving in opposite direction to the normal current flow through the filter, thereby effecting most thorough cleaning.

Another object of the invention is to provide for flushing and carrying away the dirt and impurities expelled from the filter in cleaning the same.

In the accompanying drawings: Figure 1 is a. vertical section of the filter showing the same in normal position. Fig. 2 is a vertical section of the valve devices in position for cleaning the filter. Fig. 3 is a similar sectlon showing the valve devices in osltlon for flushing out the 1m uritles. Fig. 4

is a transverse section 0 the operating means for the valve devices.

The filter comprises a case or tank I hav ing a bottom 2 screwed thereon, said bottom having inlet and outlet connections for the water and the. said case having in its side a faucet or valve outlet 3. Below said faucet a perforate partition 4 extends across the filter tank, the space above this partition serving to receive the filtered water portion thereof above the water level serving as a pressure or air chamber 5 to exert pressure on the water. he space below the partition 4 is filled with suitable filtering material 6 resting upon a perforate bed or bottom 7 which in turn rests upon a suitable support 3.

The valve devices for controlling the flow of water into and out of the filter comprise a movable valve member 9 and a tubular fitting or body 10 having an upward projection 11 formed as a screw plug to screw into the bottom of the tank 1. The said projection has two vertical passages 12, 13, connecting at their up er ends with the space 14 at the bottom 0 thefilter tank and connecting at their lower ends with a longitudinal passage 15 in the fitting 10, the said passages 12, 13 serving as ports for the Patented Aug. 4, 1908.

Serial No. 342,571.

valve. The movable valve member, preferably formed as a slide, operates in the passage 15 and has a passage 16 opening endwise into the passage 15 of the tubular fitting and o enin upward to connect with one or the other 0 the vertical assages 12, 13 as hereinafter described. 'l lic forward end of this valve member is formed with a valve closure or disk 26 to engage a fixed seat 17 at the forward end of the tubular passage 15, the fitting 10 being provided with a tubular faucet extension or outlet 18 extending forwardly from this valve seat. A portion 19 of thevalve member 9 between the valve closure 17 and the sliding portion 20 of the valve member 9 is formed sufficiently smaller than the passage 15 to permit a free passage of water around the same and into the outlet 18 when tlievalve member is in open position. Tubular fitting 15 is connected to a supply pipeynot shown, supplying water under pressure. The above described valve device may by an arbor 21. mounted to turn in a plug 2' screwed into the top of the fitting 10 an carrying at its inner end a disk 23 having a crank pin 24 working in a transverse slot 25 in the valve member 10, said arbor being provided at its outer end with an operating handle 27, and a stulling box 28 being provided where the arbor passes through the plug.

The normal position of the device is shown in Fig. 1, the handle being placed in such position that the valve member 9 will establish communication from the supply pipe connection or inlet at 15 through the .ssage 16 in the valve member, port 12 to tlie filter-inlet space 14 at the bottom of the filter tank. From this s ace the water percolates up through the filter medium to the space above the same and accumulates in the 11 )per part of the tank. In this operation t 1e arr is compressed in the upper part, or air chamber, of the tank. One effect of this compression is to cause the water to issue with more force, but the main object of this com pression is to enable rapid and ell'ectual cleaning of the filter medium when clogged. \Yhen the filter is to be cleaned the handle is turned to the position shown in Fig. 2. This cuts oil eomnninication from the supply pipe by bringing the upper end of the passage 16 in the valve member 9 directlv under a solid part of the top wall of the filter 1 between the ports 12, 13, and the valve member being also at the same time moved rearwardly a suflicient distance to open communication from the port 12 to the space 19 around the valve member and to open the valve closure 26 from its seat 17'. The compressed air in v the top of the tank 1 will now compress the water in the tank downwardly through the filter medium and the downwardly passing current of water will carry with it the accumulated dirt, etc., this operation resulting in cll'ectual cleaning for the reason that the cleaning current is in direct opposition to the soiling current, and therefore completely undoesthe clogging etlect thereof. This operation having been com )leted th handle 27 is turned to position as sliovm in Fig. 3, moving the Valve member still fur her back, bringing the passage 16 therein into register with the port 13, the port 12 still remaining in communication with the space 19 around the valve member. ater can now low directly from the supply through passages 16, 13, s nice 14 and passages 12, 19, to the outlet, t ms flushing out the dirt washed down from the filter. If on account of clogging of the filter or for an Y other reason it is desired to use the flow of water direct from the supply pipe, this can be done by turning the valve as shown in Fig. 3.

What I claim is 1. A filter tank having a pressure chamber, filtering material below the pressure chambor, outlet means from the tank above the filter means, a water supply connection, and recessed reciprocatory valve means establishing communication from the water supply connection to the inlet portion-of the filter, said valve means being movable to cut off communication from the supply connection and to establish a discharge connection from the inlet chamber of the filter, and being further movable to establish a direct connection from the supply to the outlet, through the inlet portion of the filter.

2. In a filter, a tank provided with a pressure chamber and a multiple ported filtering chamber, a reciprocatory valve connected with said ports adapted to establish communication between the inlet and the tank the casing provided with means for establishmg communication between the casing and the tank through said ports, one at a time, or simultaneously, and means for moving the valve to establish said comnnmication.

4. In a filter, a-tank provided with a compression chamber and a filtering chamber, the compression chamber being provided .with a faucet, a valve casing connected with the tank, provided with an inlet, and outlet and a plurality of ports, a reciprocating valve in the casing provided at one end with a channel communicating with the inlet and adapted to communicate with either of said ports, the other end of the valve being reduced in size to establish communication between one of said ports and the outlet, said reduced end being adapted to close said outlot when in one position, and means for moving the valve.

5. In a filter, a tank provided with a com pression chamber, a filtering chamber, and a filter inlet space, a valve casing connected with the tank and rovided with a valve seat, an inlet, an out et, and two ports communicating with said space, a reel )rocatory valve in the casing, one end of which is channeled to communicate with either one of said ports, and the other end is reduced and provided with a valve adapted to engage with said seat, and a rotary arbor seated in the casing provided with means for engaging with said valve and with a handle for rotat ing it.

In testimony whereof, I have hereunto set my hand at Los Angeles California this 31st day of October 190 ALONZO E. CHAPMAN.

In presence of ARTHUR P. KNIGHT, FRANK L. A. GRAHAM. 

